Class ARBShaderAtomicCounters
This extension provides a set of atomic counters.
This extension provides GLSL built-in functions to query and increment/decrement these atomic counters.
This enables a shader to write to unique offsets (append to a buffer object) or read from unique offsets (consume from a buffer object).
Opaque handles to atomic counters are declared at global scope and are qualified with the uniform qualifier.
Unlike other user-defined uniforms declared at global scope, they take NO storage from the default partition, they have NO location, and they may NOT be set with the Uniform* commands. Atomic counters may also NOT be grouped into uniform blocks.
Active atomic counters can be discovered by the commands GetUniformIndices
, GetActiveUniformName
, GetActiveUniform
and
GetActiveUniformsiv
.
Like samplers, the opaque handles of the atomic counters and are ONLY used in some GLSL built-in functions.
The atomic counters pointed to by the opaque handles are bound to buffer binding points and buffer offsets through the layout qualifiers in the shading language, or they are implicitly assigned by the compiler.
Through the OpenGL API, buffer objects may be bound to these binding points with BindBufferBase
or BindBufferRange
.
The contents of the atomic counters are stored in the buffer objects. The contents of atomic counters may be set and queried with buffer object manipulation functions (e.g. BufferData, BufferSubData, MapBuffer or MapBufferRange).
Requires OpenGL 3.0
. Promoted to core in OpenGL 4.2
.
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Field Summary
Modifier and TypeFieldDescriptionstatic final int
Accepted by thepname
parameter of GetProgramiv.static final int
Accepted by thetarget
parameter of BindBufferBase and BindBufferRange.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetBooleani_v, GetIntegeri_v, GetFloati_v, GetDoublei_v, GetInteger64i_v, GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, GetDoublev, and GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetActiveAtomicCounterBufferiv.static final int
Accepted by thepname
parameter of GetIntegeri_64v.static final int
Accepted by thepname
parameter of GetIntegeri_64v.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.static final int
Accepted by thepname
parameter of GetActiveUniformsiv.static final int
Returned inparams
by GetActiveUniform and GetActiveUniformsiv. -
Method Summary
Modifier and TypeMethodDescriptionstatic int
glGetActiveAtomicCounterBufferi
(int program, int bufferIndex, int pname) Obtains information about the set of active atomic counter buffers for a program.static void
glGetActiveAtomicCounterBufferiv
(int program, int bufferIndex, int pname, int[] params) Array version of:GetActiveAtomicCounterBufferiv
static void
glGetActiveAtomicCounterBufferiv
(int program, int bufferIndex, int pname, IntBuffer params) Obtains information about the set of active atomic counter buffers for a program.static void
nglGetActiveAtomicCounterBufferiv
(int program, int bufferIndex, int pname, long params) Unsafe version of:GetActiveAtomicCounterBufferiv
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Field Details
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GL_ATOMIC_COUNTER_BUFFER
public static final int GL_ATOMIC_COUNTER_BUFFERAccepted by thetarget
parameter of BindBufferBase and BindBufferRange.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_BINDING
public static final int GL_ATOMIC_COUNTER_BUFFER_BINDINGAccepted by thepname
parameter of GetBooleani_v, GetIntegeri_v, GetFloati_v, GetDoublei_v, GetInteger64i_v, GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, GetDoublev, and GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_START
public static final int GL_ATOMIC_COUNTER_BUFFER_STARTAccepted by thepname
parameter of GetIntegeri_64v.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_SIZE
public static final int GL_ATOMIC_COUNTER_BUFFER_SIZEAccepted by thepname
parameter of GetIntegeri_64v.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_DATA_SIZE
public static final int GL_ATOMIC_COUNTER_BUFFER_DATA_SIZEAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTERS
public static final int GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTERSAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTER_INDICES
public static final int GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTER_INDICESAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_VERTEX_SHADER
public static final int GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_VERTEX_SHADERAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_CONTROL_SHADER
public static final int GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_CONTROL_SHADERAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_EVALUATION_SHADER
public static final int GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_EVALUATION_SHADERAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_GEOMETRY_SHADER
public static final int GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_GEOMETRY_SHADERAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_FRAGMENT_SHADER
public static final int GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_FRAGMENT_SHADERAccepted by thepname
parameter of GetActiveAtomicCounterBufferiv.- See Also:
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GL_MAX_VERTEX_ATOMIC_COUNTER_BUFFERS
public static final int GL_MAX_VERTEX_ATOMIC_COUNTER_BUFFERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERS
public static final int GL_MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERS
public static final int GL_MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS
public static final int GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_FRAGMENT_ATOMIC_COUNTER_BUFFERS
public static final int GL_MAX_FRAGMENT_ATOMIC_COUNTER_BUFFERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_COMBINED_ATOMIC_COUNTER_BUFFERS
public static final int GL_MAX_COMBINED_ATOMIC_COUNTER_BUFFERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_VERTEX_ATOMIC_COUNTERS
public static final int GL_MAX_VERTEX_ATOMIC_COUNTERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_TESS_CONTROL_ATOMIC_COUNTERS
public static final int GL_MAX_TESS_CONTROL_ATOMIC_COUNTERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_TESS_EVALUATION_ATOMIC_COUNTERS
public static final int GL_MAX_TESS_EVALUATION_ATOMIC_COUNTERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_GEOMETRY_ATOMIC_COUNTERS
public static final int GL_MAX_GEOMETRY_ATOMIC_COUNTERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_FRAGMENT_ATOMIC_COUNTERS
public static final int GL_MAX_FRAGMENT_ATOMIC_COUNTERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_COMBINED_ATOMIC_COUNTERS
public static final int GL_MAX_COMBINED_ATOMIC_COUNTERSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_ATOMIC_COUNTER_BUFFER_SIZE
public static final int GL_MAX_ATOMIC_COUNTER_BUFFER_SIZEAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_MAX_ATOMIC_COUNTER_BUFFER_BINDINGS
public static final int GL_MAX_ATOMIC_COUNTER_BUFFER_BINDINGSAccepted by thepname
parameter of GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.- See Also:
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GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
public static final int GL_ACTIVE_ATOMIC_COUNTER_BUFFERSAccepted by thepname
parameter of GetProgramiv.- See Also:
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GL_UNIFORM_ATOMIC_COUNTER_BUFFER_INDEX
public static final int GL_UNIFORM_ATOMIC_COUNTER_BUFFER_INDEXAccepted by thepname
parameter of GetActiveUniformsiv.- See Also:
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GL_UNSIGNED_INT_ATOMIC_COUNTER
public static final int GL_UNSIGNED_INT_ATOMIC_COUNTERReturned inparams
by GetActiveUniform and GetActiveUniformsiv.- See Also:
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Method Details
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nglGetActiveAtomicCounterBufferiv
public static void nglGetActiveAtomicCounterBufferiv(int program, int bufferIndex, int pname, long params) Unsafe version of:GetActiveAtomicCounterBufferiv
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glGetActiveAtomicCounterBufferiv
public static void glGetActiveAtomicCounterBufferiv(int program, int bufferIndex, int pname, IntBuffer params) Obtains information about the set of active atomic counter buffers for a program.- Parameters:
program
- the name of a program object for which the commandLinkProgram
has been issued in the pastbufferIndex
- the index of an active atomic counter bufferpname
- the parameter to query. One of:params
- a buffer in which to place the returned value
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glGetActiveAtomicCounterBufferi
public static int glGetActiveAtomicCounterBufferi(int program, int bufferIndex, int pname) Obtains information about the set of active atomic counter buffers for a program.- Parameters:
program
- the name of a program object for which the commandLinkProgram
has been issued in the pastbufferIndex
- the index of an active atomic counter bufferpname
- the parameter to query. One of:
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glGetActiveAtomicCounterBufferiv
public static void glGetActiveAtomicCounterBufferiv(int program, int bufferIndex, int pname, int[] params) Array version of:GetActiveAtomicCounterBufferiv
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